The concept is really great but the execution leaves a lot to be desired. My main gripe is the map is way too dark and badly lit, which hurts the visual appeal quite a bit (even if I it is supposed to be dark). I was also able to walk outside the map through the entrance door.
The idea of sneaking into an abandoned arcade, flipping on the lights and playing the games is really cool and a good fit for Halloween as well. This has a lot of potential, maybe with a meta-game of beating some of the arcade games to advance to the next area.